For archival purposes, I am storing a list of emails. I would like to be able to later find a particular message in my Gmail account. A unique message identifier is its Message-ID. However Gmail does not allow searching for it (returns an empty result). I don't really understand why, since the ID is in the message text.
Is there a way to retrieve a message by its Message-ID in Gmail?
Best Answer
This is now possible.
Announced in a recent blog post, you can now use a bunch of new search operators, including RFC 822 message ID.
From Gmail Help - Using advanced search